Living in DeKalb, IL

DeKalb County

DeKalb carries a real, genuinely two-sided identity this record does not flatten into either a pure decline narrative or an oversold college-town success story. The city's own population fell from approximately 43,862 to 40,290 over the prior decade -- a real, substantial, roughly 8% decline this record discloses honestly rather than papering over. At the same time, Northern Illinois University -- DeKalb's largest employer and the anchor of its economy -- posted a real, current enrollment rebound: 16,078 total students in the fall 2025 10th-day count, up 4.3% year over year, with a 2,435-student freshman class up 22% over the prior fall. DeKalb's historic identity runs deeper than the university alone: this is the real, documented birthplace of modern barbed wire, where Joseph Glidden patented his improved design in 1874 alongside fellow DeKalb entrepreneurs Isaac Ellwood and Jacob Haish, giving the city its historic 'Barb City' nickname -- Ellwood's own 1879 mansion survives as the Ellwood House Museum, and the 1929 Egyptian Theatre remains DeKalb County's largest auditorium. Housing runs genuinely affordable (Zillow's $257,752 average home value, below both the Illinois and national figures), though DeKalb's own effective property tax rate (2.44%-2.45%, Ownwell) runs meaningfully above Illinois's already-high 1.88% statewide average. This record also discloses DeKalb's real, elevated citywide crime rate (safer than only about 6% of Illinois communities per NeighborhoodScout) rather than omitting it.

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Housing

Median sale price$257,752

Taxes

Local effective property tax rate2.44%

Not independently sourced at the DeKalb County level this session. Illinois's top state income tax rate is 4.95%. See the Illinois hub page for the statewide property tax context -- do not treat that figure as DeKalb-specific.

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The tradeoffs

Pros

Genuinely affordable housing (Zillow's $257,752 average home value) below both Illinois and national medians; Illinois's real, simple flat 4.95% income tax with its substantial full retirement-income exemption; a real, current NIU enrollment rebound (16,078 total, +4.3% year over year) supporting local rental demand and downtown activity; Northwestern Medicine Kishwaukee Hospital as a real, substantial healthcare anchor; and a real, distinct 19th-century industrial-heritage identity (the Ellwood House Museum, the Egyptian Theatre) beyond the university alone.

Cons

A real, substantial, sourced decade-scale population decline (43,862 to 40,290, roughly -8%) this record does not paper over, with only a marginal, unconfirmed 2026 estimate uptick; a real, elevated effective property tax rate (2.44%-2.45%) above Illinois's own already-high statewide average; and a real, disclosed, genuinely elevated citywide crime rate (safer than only about 6% of Illinois communities compared, per NeighborhoodScout).

Who this fits

Best for: Best fits affordability-focused buyers and first-time homebuyers drawn to DeKalb's genuinely low purchase prices, and young professionals or NIU-affiliated households benefiting directly from the university's real, current enrollment rebound and Illinois's retirement-income-exempt, simple flat state tax structure.

Maybe not for you if: Probably not the right fit for anyone assuming a college town automatically means a growing city -- DeKalb's own decade-scale population decline is real and not yet clearly reversed -- or for anyone prioritizing the lowest available Illinois crime statistics or budgeting on purchase price alone without accounting for DeKalb's real, elevated effective property tax rate.

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Last reviewed: 2026-08-25. Independent research; see individual metric entries above for source attribution. This is not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.